Improvement in the manufacture of boxes



c. STORER.

Manufacture of Boxes.

N0. 133,496 Patented Nov..26,187.2.

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UNITED STATES PATENT QFFIGE.

CHARLES STORER, OF MONTREAL, CANADA.

IMPROVEMENT IN THE MANUFACTURE OF BOXES.

Specification forming part of Letters Patent No. 133,496, dated November26, 1872.

To all whom it may concern:

Be it known that I, CHARLES STORER, of

I the city of Montreal, in the district of Montreal, in the Province ofQuebec, Canada, have invented new and useful Improvements on theManufacture of Boxes composed of Tin and Wood, &c.; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawing, where- Figure 1represents a perspective view of box; Fig. 2 represents a detail view,old method; Fig. 3 represents a detail view, new method; and Fig. 4represents a detail view, finished.

This invention has reference to the construction of boxes of acylindrical form with fiat ends. These have their cylindrical portionsmade of tin or other thin sheet metal, while the top and bottom are madeof wood, cardboard, &c. The object of the present invention is to form acloser-fitting joint between the wood or cardboard and the tin, and thusadapt them better to the purposes for which they are at presentemployed.

In the drawing, similar letters of reference indicate like parts.

It may be well here to explain the present mode of manufacturing theseboxes, the better to illustrate my improved method.

The tin out to form the cylindrical parts a of the box is, in the methodnow employed, first taken and its edge bent with a pair ofgrooving-rollers, forming the recess 1). This is then placed around thewooden top or bottom 0 of the box and its ends brought together, (thelength of the strip a. being cut in the first place to give its ends therequired amount of overlap.) They are then soldered-the outer end d uponthe inner one. This gives the form of joint around the top and bottomshown in Fig. 2, which is formed by the bearing of the edges of c in therecess b.

In my improved method the strip of tin, which, has been cut to theproper dimensions for the size of the box required, is first bent toform a cylinder of the required size to correspond with a in thedrawing. Its ends, which overlap, are now soldered together, leaving aplain cylinder. I now introduce the edge of this cylinder into abeading-machine to give it the double bend 0 shown in Fig. 3. The top orbottom, as'the case maybe, is now put in place. The whole is thenchucked in a lathe, and-with a grooved wheel similar to that used formilling the edges of thumb-screws,

&c., onlythat in the present instance the wheel is made quite smooth inthe groove; or with any suitable bnruishing-tool--the end fin Fig. 3 islaid down and turned over to the form g in Fig. 4, where it will be seenthat the extremity is embedded in the top or bottom 0. By this not onlyis ajoint formed atg, but the other side of c is pressed against theopposite side of the recess 1), forming a second joint, h, at thatpoint.

By means of the method described a box is produced which is far superiorto those constructed in the ordinary manner. As the edge of the metal isembedded in the wood it follows that a perfectly-tight joint is formed,and

a smooth and perfect finish is given to the parts.

Having now described my invention, what I claim is as follows:

As a new article of manufacture, the box described, consisting of theband a, provided with the double bend e and edge g, the latter beingembedded in the top or bottom 0, substantially as described.

Montreal, 10th day of August, A. D. 1872.

CHARLES STORER. Signed in presence of CHARLES G. G. SIMPSON, FRAs. HY.REYNOLDS.

